title: Assessing the impact of the urbanization process on net primary productivity in China in 1989-2000.
abstract: Urban development affects the material circulation and energy flow of ecosystems, thereby affecting the Net Primary Productivity (NPP). The loss of NPP due to urban expansion was calculated integrating GLO-PEM with remote sensing and GIS techniques in China during the period of 1989-2000. Using urban expansion and the mean NPP for the different land use types in the fourteen regions, the total loss of NPP was calculated as 0.95 Tg C, which accounted for 0.03% of the national NPP of 1989. The total loss of NPP due to the transformation from cropland to urban land accounted for 91.93%, followed by forest (7.17%) and grassland (0.69%). However, the conversion from unused land, industrial and construction land, and water bodies to urban land resulted in an increase in the NPP. The regions locating in eastern China and middle China had large reductions in the total NPP due to urban expansion.
authors.affiliation: State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Xinjie Kouwai Street, Beijing 100875, PR China. Electronic address: tianguangjin@gmail.com.
authors.forename: Guangjin
authors.initials: G
authors.lastname: Tian
authors.forename: Zhi
authors.initials: Z
authors.lastname: Qiao
mesh_terms: D002681:China; D017753:Ecosystem; D004784:Environmental Monitoring; D014197:Trees; D014507:Urbanization
keywords: China; NPP loss; Remote sensing; Urbanization process